When solving an equation with two variables, replace the variables with the values given and then solve the now variable-free equation. (Remember order of operations, PEMDAS, Parentheses, Exponents, Multiplication/Division, Addition/Subtraction.)
Solve 6a + 3a = 4a - 8y + 9 for a in terms of y.
| \(\frac{1}{2}\)y + 3\(\frac{1}{2}\) | |
| -14y - 4 | |
| 1\(\frac{3}{4}\)y - \(\frac{5}{8}\) | |
| -5\(\frac{1}{2}\)y + 4\(\frac{1}{2}\) |